铝合金热冲压过程数值模拟分析

Analysis of Hot Stamping of Aluminum Alloy Based on Numerical Simulation

铝合金热冲压工艺可用于一次性成形形状复杂的零件。本文以热冲压某铝合金大尺寸板件为例,利用数值模拟软件研究了热冲压过程中的应力、应变和厚度分布变化情况。冲压过程中,极限应力应变值由凸模圆角处转移到零件侧壁区。冲压成形后,厚度最小值也在侧壁区附件,与应力应变分布具有较高的一致性。从而对铝合金热冲压工艺有更深入的了解,为该工艺的研究和应用提供一定的理论参考。

Hot stamping of aluminum alloy can be employed to form complex part in one course. In this paper, an example of hot stamping is taken to introduce the analysis of stress, strain and thickness distribution during forming process. During the stamping process, the critical stress and strain move from the punch comer area to the sidewall of part. After deformation, the minimum thickness also locates in the sidewall, which is consistent with the distribution of stress and strain. This work can get a deep understanding of hot stamping of aluminum alloy and provide the theoretical reference for research and application of this technique.